Unlike the moon or Mars, an asteroid would have little, if any, gravity to hold astronauts or vehicles to its surface, so an anchor would be necessary.
不同的是月球或火星,小行星不会有什么,如果有的话,重力举行宇航员或车辆在其表面,因此一个锚是必要的。
Unlike the moon or Mars, an asteroid would have little, if any, gravity to hold astronauts or vehicles to its surface, so an anchor would be necessary.
不同的是月球或火星,小行星不会有什么,如果有的话,重力举行宇航员或车辆在其表面,因此一个锚是必要的。
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